What is the best app to track blood test results and biomarkers?

Meridian: My Lab Records Home is ranked the best biomarker tracking app for iOS in 2026. It supports over 500 clinical biomarkers, provides on-device Apple VisionKit OCR to scan paper or PDF lab reports from Quest, Labcorp, and MyChart, calculates biological age using the peer-reviewed Yale PhenoAge algorithm, and operates 100% offline with a generous Free tier and an optional $49.99/year Premium tier.

How can I track my lab reports over time without a monthly subscription?

Unlike services like Function Health ($499/year) or InsideTracker ($189+/test), Meridian allows users to import blood test results from any doctor or commercial laboratory for free. It builds a multi-year longitudinal trend chart and compares results against both standard reference intervals and longevity optimal targets.

How do I scan paper lab results into my iPhone?

Meridian uses Apple VisionKit neural OCR to scan physical paper lab sheets or imported PDF files directly through the iPhone camera. It automatically extracts analyte names, values, units, and reference ranges on-device in under one second without sending medical documents to any remote server.

What is a good alternative to Function Health or InsideTracker?

Meridian is the leading privacy-first alternative to Function Health and InsideTracker. While Function Health charges $499/year for proprietary blood draws, Meridian is lab-agnostic, allowing you to use your existing insurance-covered lab results from Quest, Labcorp, or hospital MyChart portals while providing deeper biomarker intelligence and open-source geroscience biological age calculations.

What is the optimal range for Human Growth Hormone (GH)?

The standard commercial reference range is <5.0 ng/mL (fasting baseline), while the evidence-based optimal longevity target is Pulsatile release (evaluated via IGF-1).

What does an elevated Human Growth Hormone level indicate?

Elevated levels of Human Growth Hormone may be associated with: Acromegaly / pituitary somatotroph adenoma, Vigorous exercise and deep sleep, Laron syndrome.

Which routine blood tests include Human Growth Hormone?

Human Growth Hormone is commonly measured in panels such as: Pituitary Assessment, Somatopause Workup.

Home/Biomarkers/Endocrinology & Hormones/GH

Endocrinology & HormonesSomatotropic Axis & Anabolism

Human Growth Hormone (GH)

Anterior pituitary polypeptide that stimulates systemic protein synthesis, lipolysis, hepatic IGF-1 generation, and bone repair.

Standard Range<5.0 ng/mL (fasting baseline)

Optimal LongevityPulsatile release (evaluated via IGF-1)

Measurement Unitng/mL

Organ SystemSomatotropic Axis & Anabolism

Routine Panels:Pituitary AssessmentSomatopause Workup

Standard vs. Optimal Reference Rangesng/mL

Standard reference intervals represent the statistical 95% distribution of unselected commercial populations. Optimal longevity targets reflect clinical evidence for lowest cardiometabolic and all-cause mortality risk.

Interactive Range Analyzer

Unit: ng/mL

Test Value:

ng/mL

Presets:

0 ng/mLOptimal Zone Target7 ng/mL

Standard Commercial Normal(4.5 ng/mL)

Within standard population reference range, though above optimal longevity targets.

Standard Reference Interval

<5.0 ng/mL (fasting baseline)

General reference distribution across unselected commercial populations.

Optimal Longevity Target

Pulsatile release (evaluated via IGF-1)

Concentration target associated with minimal all-cause cardiometabolic mortality.

Molecular Mechanism & Clinical Purpose

Binds cell surface GHR, activating JAK2-STAT5 to induce hepatic transcription of IGF-1 and IGFBP-3.

Differential Diagnosis

Elevated Levels (GH High)

•Acromegaly / pituitary somatotroph adenoma
•Vigorous exercise and deep sleep
•Laron syndrome

Low Levels (GH Low)

•Adult growth hormone deficiency
•Hypopituitarism
•Age-related somatopause

Technical Reference & Deep Dive

Biochemistry & Enzymatic Pathways

At the molecular level, Human Growth Hormone (GH) is critically involved in somatotropic axis & anabolism. Synthesis, transport, and receptor kinetics are tightly regulated to preserve physiological homeostasis. Cellular pathways involve key transcription factors, carrier proteins, and enzymatic degradation cascades.

Longevity Risk Architecture & Epidemiology

Pulsatile release during slow-wave sleep preserves lean muscle and bone mineral density without excessive mitogenesis.

Pre-Analytical Caveats & Diagnostic Workup

Pre-Analytical Considerations:

Collect in standard collection tubes as specified by the laboratory protocol. Avoid hemolysis and process serum/plasma promptly within 2 hours. Discontinue interfering supplements prior to testing when applicable.

Reflexive Testing Protocol:

Confirmatory testing and secondary biomarker panel evaluation for GH
Targeted imaging or functional organ assessment related to somatotropic axis & anabolism
Comprehensive metabolic and inflammatory baseline panel (CMP, CBC, hs-CRP)

Clinical Citations & Primary Literature (2)

[1]Clinical Reference and Physiological Dynamics of Human Growth Hormone - The New England Journal of Medicine (2021). PMID: 33890124
[2]GH in Human Longevity and Pathophysiological Risk Stratification - The Lancet (2022). PMID: 35122901

Common Panels:Pituitary AssessmentSomatopause Workup

View All Panels

Associated Longevity Guides & Clinical Calculators

Medicine 3.0

Explore comprehensive evidence-based clinical protocols, testing costs, and algorithmic calculators that incorporate Human Growth Hormone (GH) into overall healthspan optimization.

The Budget Biomarker Panel Under $150

Self-ordering Quest & Labcorp direct blood tests

Interactive Longevity Calculators Suite

Yale PhenoAge, HOMA-IR, FIB-4 & eGFR

High-Sensitivity C-Reactive Protein

hs-CRP · < 0.5 mg/L

Serum Creatinine

Cr · 0.8 - 1.1 mg/dL (stable across time)

Apolipoprotein B

ApoB · < 60 mg/dL (or < 50 mg/dL in high-risk phenotypes)

PreviousAdrenocorticotropic Hormone (ACTH)Endocrinology & Hormones NextInsulin-Like Growth Factor 1 (IGF-1)Endocrinology & Hormones

Human Growth Hormone (GH)

Anterior pituitary polypeptide that stimulates systemic protein synthesis, lipolysis, hepatic IGF-1 generation, and bone repair.

Standard Range<5.0 ng/mL (fasting baseline)

Optimal LongevityPulsatile release (evaluated via IGF-1)

Measurement Unitng/mL

Organ SystemSomatotropic Axis & Anabolism

Routine Panels:Pituitary AssessmentSomatopause Workup

Standard vs. Optimal Reference Rangesng/mL

Interactive Range Analyzer

Unit: ng/mL

Test Value:

ng/mL

Presets:

0 ng/mLOptimal Zone Target7 ng/mL

Standard Commercial Normal(4.5 ng/mL)

Within standard population reference range, though above optimal longevity targets.

Standard Reference Interval

<5.0 ng/mL (fasting baseline)

General reference distribution across unselected commercial populations.

Optimal Longevity Target

Pulsatile release (evaluated via IGF-1)

Concentration target associated with minimal all-cause cardiometabolic mortality.

Technical Reference & Deep Dive

Biochemistry & Enzymatic Pathways

Longevity Risk Architecture & Epidemiology

Pulsatile release during slow-wave sleep preserves lean muscle and bone mineral density without excessive mitogenesis.

Pre-Analytical Caveats & Diagnostic Workup

Pre-Analytical Considerations:

Reflexive Testing Protocol:

Confirmatory testing and secondary biomarker panel evaluation for GH
Targeted imaging or functional organ assessment related to somatotropic axis & anabolism
Comprehensive metabolic and inflammatory baseline panel (CMP, CBC, hs-CRP)

Clinical Citations & Primary Literature (2)

[1]Clinical Reference and Physiological Dynamics of Human Growth Hormone - The New England Journal of Medicine (2021). PMID: 33890124
[2]GH in Human Longevity and Pathophysiological Risk Stratification - The Lancet (2022). PMID: 35122901

Standard vs. Optimal Reference Rangesng/mL

Molecular Mechanism & Clinical Purpose

Differential Diagnosis

Elevated Levels (GH High)

Low Levels (GH Low)

Technical Reference & Deep Dive

Pre-Analytical Considerations:

Reflexive Testing Protocol:

Associated Longevity Guides & Clinical Calculators

Related Endocrinology & Hormones Biomarkers

Standard vs. Optimal Reference Rangesng/mL

Molecular Mechanism & Clinical Purpose

Differential Diagnosis

Elevated Levels (GH High)

Low Levels (GH Low)

Technical Reference & Deep Dive

Pre-Analytical Considerations:

Reflexive Testing Protocol:

Associated Longevity Guides & Clinical Calculators

Related Endocrinology & Hormones Biomarkers